Trolley device.



No. 779,441. PATENTED JAN. 10, 1905. H. 0. REESE & H. G. WEITZEL.

TROLLEY DEVICE.

AIPLIGATION FILED JUNE 10, 1904.

UNITED STATES Patented January 10, 1905.

PATENT OFFICE.

HENRY O. REESE AND HENRY C. WEITZEL, OF BALTIMORE, MARYLAND.

TROLLEY DEVICE.

SPECIFICATION forming part of Letters Patent No. 779,441 dated January10, 1905.

Application filed June 10, 1904- Serial No. 212,054.

To all whom it may concern.-

Be it known that we, HENRY O. REESE and HENRY G. VVEITZEL, citizens ofthe United States, residing at Baltimore city, State of 5 Maryland, haveinvented certain new and useful Improvements in Trolley Devices,of whichthe following is a specification.

()ur invention relates to an improvement in trolleys, the primary objectbeing to insure IO contact with the wire practically at all timesnotwithstanding the springing of the trolley away from the wire due tostriking obstructions-as switches, for instance; and it consists in theusual trolley-arm and a rocker which carries two trolley-wheels and iscentrally pivoted at the upper end of the trolleyarm immediately abovethe shoulders formed near the pivot in position to catch the yoke orrocker in either of its positions, whereby to limit the rocking motionof the latter.

The invention further consists in certain novel features of constructionand combinations of parts, which will be hereinafter described, andpointed out in the claims.

The accompanying drawing is a view in side elevation of our improvedtrolley, the dotted lines indicating the extreme positions of thetrolley.

A represents the trolley-arm, and 1 is the head at the upper endthereof, and this head preferably comprises the sides 2 2 and the bottomplate 3. A rocker or yoke 4 is pivoted,by means of the pin 5, betweenthese sides 2 2 and carries the two trolley-wheels 6 6 at its oppositeends, they being preferably located about three inches apart.

The rocker 4: is preferably curved into a kind of U-shaped form, itbeing pivoted at its center.

A shoulder 7 is formed, preferably, at the upper end of plate 3 inposition to receive the lower edges of the rocker, whereby to preventthe latter from rocking too far in either direction, thus maintaining itin a position 45 somewhere approximating horizontal. The

curvature of the rocker with the location of the stop in relation to thepivot affords a convenient means for arresting the downward movement ofthe rocker in either direction. 5 This shoulder 7 extends parallel withthe sides 2 2 of the head and closes the rear side of the slot formedbetween the sides. The upper end of the shoulder is upset or offset, asshown, to permit the rocker to assume the position shown in dottedlines. By means of this construction the rocker never tips so far thatit will not right itself. In other words, the axes of the trolley-wheelnever pass the vertical plane of the pivot-pin 5.

From the foregoing it will be seen that the moment an obstruction isstruck by the forward trolley-wheel and it jumps from the trolley-wirethe other wheel maintains its position against the wire and tends torestore the forward wheel, due to the upward pressure of thetrolley-arm. Then when the obstruction reaches the second or rear wheelthe latter leaves the wire and the forward wheel maintains its positionthereon, thus always preserving a continuity of electrical current. andby reason of the stop the rocker is limited in its movement, so that itquickly resumes its normal position upon passing the obstruction.

It is evident that slight changes might be resorted to in the form andarrangement of the several parts described without departing from thespirit and scope of our invention, and. hence we do not wish to limitourselves to the exact construction herein set forth; but,

Having fully described our invention, what we claim as new, and desireto secure by Letters Patent, is

1. The combination with a trolley-arm having a slotted head, of ashoulder closing a portion of the rear side of the slot and atrolleywheel-carrying gravity-operated rocker pivoted between the upperends of the sides.

2. The combination with a trolley-arm having a slotted head, of atrolley-wheel-carrying rocker pivoted in the slot at the upper endthereof and a stop closing the rear side of the slot between the base ofthe slot and the rocker, the upper end of the stop being offset to admitan oscillatory movement of the rocker.

In testimony whereof we aflix our signatures in presence of twowitnesses.

HENRY O. REESE. HENRY G. WVEITZEL.

Witnesses:

E. (VALTON BREWINGTON, J. A. HILLEARY, Jr.

